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Re: dynamic or static IPv6 prefixes to residential customers
From: Mark Andrews <marka () isc org>
Date: Wed, 03 Aug 2011 14:43:51 +1000


In message <4E38C59D.8000201 () jima tk>, Jima writes:
On 2011-08-02 11:17, Owen DeLong wrote:

en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST>  mtu 1500
   ether 60:33:4b:01:75:85
   inet6 fe80::6233:4bff:fe01:7585%en1 prefixlen 64 scopeid 0x5
   inet 192.168.191.223 netmask 0xffffff00 broadcast 192.168.191.255
   inet6 fd92:7065:b8e::6233:4bff:fe01:7585 prefixlen 64 autoconf
   inet6 2001:470:1f00:820:6233:4bff:fe01:7585 prefixlen 64 autoconf
   media: autoselect
   status: active

Note the multiple prefixes.  IPv6 is not just IPv4 with bigger addresses.
If you want to give your printers, etc. stable IPv6 addesses use ULAs.


Icky.


Better yet, just subscribe to an ISP that will give you a static prefix.

  Well, judging by his prefixes, he does.

Indeed it is static but that doesn't change the argument that having a ULA
works.  The address selection algorithms choose the right source address
for the correct destination address.  The RA's for 2001:470:1f00:820::/64
could be withdrawn and the network would continue to work.

Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka () isc org


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